In 2006, marketing researchers Joseph Nunes and Xavier Drèze handed out loyalty cards at a car wash. Half the customers got a card with eight slots, all empty. The other half got a card with ten slots, two of which were already stamped. Both groups needed eight more washes to earn a free one. The task was identical. But the customers with the head start completed the card at nearly double the rate, and returned sooner between washes. Nunes and Drèze called it the endowed progress effect. Every punch card, progress bar, and “you’re 20% done” message since has borrowed from it.
What the study found
| Card | Slots | Pre-stamped | Washes needed | Completed |
|---|---|---|---|---|
| Blank | 8 | 0 | 8 | 19% |
| Head start | 10 | 2 | 8 | 34% |
The head-start group also came back faster: the average gap between visits was shorter, and it shrank as they got closer to the free wash. That second finding matters as much as the first, because it points at the mechanism.
The insight: people are not motivated by how much is left. They are motivated by how far along they feel. Two free stamps changed the feeling without changing the work.
Why it works: the goal gradient
Nearly a century ago, Clark Hull observed that rats ran faster as they got closer to the food at the end of a maze. The pattern, called the goal gradient, appears in people too: coffee buyers purchase more frequently as their card fills, fundraising donations accelerate near the target, and study participants work harder on the last items of a task. A pre-stamped card does two things at once. It reframes the task as already started, which makes abandoning it feel like a loss. And it moves you along the gradient, into the zone where each remaining step feels more valuable.
There is a related finding: progress that feels earned, or at least plausible, works better than progress that is obviously fake. The two free stamps had a reason, a promotion. A card that says “you’re halfway!” on day one would not fool anyone.
How to use it on yourself
- Start every card with a punch. Setting up the card, deciding the goal, doing the first tiny version: that is real work. Punch it. The card is no longer blank, and blank cards are the ones that get abandoned.
- Count what you have already done. Starting a reading goal in March? The books you finished in January and February count. Starting a savings goal? The balance you already have counts. The savings goal calculator and reading goal calculator both take current progress for exactly this reason.
- Make the first milestone close. A 100-day goal with a first milestone at day 7 feels started by the end of the first week. Split big goals into cards of ten or twenty, so each card is a finish. The goal pace calculator splits any countable goal into twenty punches.
- Show progress as filled, not remaining. “6 of 10 punched” beats “4 to go” early on. Once the end is near, the framing flips: “only 2 left” accelerates. Punch cards do both at a glance.
- Never reset to zero. A tracker that wipes a streak after one miss throws away endowed progress on purpose. Show the gap and keep the punches; see never miss twice.
Using it with kids and teams
The effect is especially useful for children, who abandon blank charts fast. Begin a reward chart with one sticker “for agreeing to try.” For a family or roommate card, the first punch can be the setup meeting. Our guides to the punch card reward system for kids and habit tracking for couples both build this in.
Where it breaks down
Endowed progress helps people finish a goal they have already decided to pursue; it does not create the decision. It also loses power if the head start is implausible or if the remaining task is far too large to picture. And once the card is full, motivation drops: the post-completion slump is well documented, which is why the next card should begin the same day, with its first punch already in it. Katherine Milkman’s temptation bundling is a complementary tool for the middle of a card, when the head start has worn off and the finish is not yet close.
Why this is the whole idea behind a punch card
A punch card is a goal made visible, with the progress you have already made shown as a row of filled circles and the finish drawn as the last empty one. Every mechanism in this article lives in that image: the endowment of what is done, the gradient toward what is close, and the loss you would feel by walking away from a card that is nearly full. Cafés figured that out decades ago. It works just as well for running, reading, saving, and drinking enough water.
Track it with a punch card
Punchcard turns any habit or countable goal into a card of punches on your iPhone home screen, with reminders, rewards, and shared cards for up to four people.
Get Punchcard freeFrequently asked questions
What is the endowed progress effect?
The finding that people are more likely to complete a goal when they feel they have already made progress toward it, even if the remaining effort is unchanged. It was named by Nunes and Drèze in a 2006 loyalty card study.
What was the car wash study?
Customers received either a blank 8-stamp loyalty card or a 10-stamp card with 2 stamps already on it. Both needed 8 more washes. About 34 percent of the head-start group completed the card versus 19 percent of the blank-card group, and they returned faster.
What is the goal gradient effect?
The tendency to work harder as a goal gets closer, first observed in rats running faster near the end of a maze and since confirmed in consumers, donors, and study participants. Endowed progress works partly by moving people along this gradient.
How can I use the endowed progress effect for my own goals?
Start any tracker with a first punch for setting it up, count progress you have already made, split large goals into cards with a near first milestone, and never reset earned progress to zero after a missed day.
Does fake progress work as well as real progress?
No. The effect is stronger when the head start is plausible or has a reason. Obviously artificial progress, such as a bar that starts at 50 percent for no reason, is discounted.